What does the BC mean within contacts?

BC written on a contact lens prescription stands for plinth curve. This is a measurement of the curvature of the lens.
The scientific definition is: the curvature of the central portion of the posterior surface of a contact lens. Base curve is expressed in millimeters of radius of curvature or surrounded by diopters.

Everyone has different cornea curvatures and and so contact lenses need to come contained by different sizes (base curves). Most soft contact lenses come in underneath curves from 8.3 to 8.9 (8.3 being steeper and 8.9 person flatter)
Hope this helps a bit :)
back christ ?
blind copy
it means you can convey a copy to someone else without the other receiver being competent to see that persons email address or know that you sent it to someone else.
Before putting Contact contained by ? ? Sorry
you need to be more specific. are you chitchat about e-mail, yahoo, or your IM?
it method Base Curve (a number between 8.0 and 10.0) whatever that finances. i included a link that explains it.

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